CN217740749U

CN217740749U - Battery module coupling assembling and battery module

Info

Publication number: CN217740749U
Application number: CN202221701189.3U
Authority: CN
Inventors: 张旭; 付方凯; 何亚飞
Original assignee: Envision Power Technology Jiangsu Co Ltd; Envision Ruitai Power Technology Shanghai Co Ltd
Current assignee: Envision Power Technology Jiangsu Co Ltd; Envision Ruitai Power Technology Shanghai Co Ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2022-11-04
Anticipated expiration: 2032-06-30

Abstract

The utility model belongs to the technical field of the battery, a battery module coupling assembling and battery module is disclosed, battery module coupling assembling includes nut base and nut. Be provided with the spread groove that extends along the first direction on the nut base, all be provided with a plurality of archs that set up along the first direction interval on the inside wall of the both sides of first direction along the spread groove, elastic deformation or plastic deformation can take place for the arch, and the nut base is configured to and links firmly with the casing of battery module. The nut sets up in the spread groove, all be provided with a plurality of recesses that set up along the first direction interval on the lateral wall of the both sides of nut edge first direction, the recess sets up with protruding one-to-one, the arch stretches into in the recess and the nut butt, the inside wall that the spread groove is located the one end of first direction is perpendicular with the first direction, and be provided with the clearance with the nut between being located the terminal surface of this end, be provided with the first connecting hole that extends along the groove depth direction of spread groove on the nut, first connecting hole is used for the electric core of coupling nut and battery module.

Description

Battery module coupling assembling and battery module

Technical Field

The utility model relates to a battery technology field especially relates to a battery module coupling assembling and battery module.

Background

The high-pressure module of current battery module and the cooperation structure of high-pressure base, it is often that high-pressure nut and high-pressure base are fixed completely or movable completely, the cooperation structure of complete fixed form, when solid-state electric core swell volume is too big, can lead to high-pressure nut and high-pressure base stress phenomenon obvious, there is the risk of fracture inefficacy, the cooperation structure of complete movable formula, although high-pressure nut can freely remove when solid-state electric core swell volume is too big, but because high-pressure nut and high-pressure base do not have fixedly completely, can lead to high-pressure nut and be connected structures such as copper bar shake at the vibration in-process, there is the risk of fatigue failure.

Therefore, a battery module connecting assembly and a battery module are needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a battery module coupling assembling and battery module both realize fixing of certain degree to the nut, make the nut remove for the nut base when electric core inflation again.

To achieve the purpose, the utility model adopts the following technical proposal:

a battery module connecting assembly comprising:

the nut base is provided with a connecting groove extending along a first direction, a plurality of bulges arranged at intervals along the first direction are arranged on the inner side walls of two sides of the connecting groove along the first direction, the bulges can generate elastic deformation or plastic deformation, and the nut base is configured to be fixedly connected with a shell of the battery module;

the nut, it set up in the spread groove, all be provided with a plurality of edges on the lateral wall of the both sides of nut along first direction the recess that first direction interval set up, the recess with protruding one-to-one sets up, the arch stretches into in the recess with the nut butt, the spread groove is located the inside wall of the one end of first direction with first direction is perpendicular, and with the nut is located and is provided with the clearance between the terminal surface of this end, be provided with the edge on the nut the first connecting hole that the groove depth direction of spread groove, first connecting hole be used for connecting the nut with the electric core of battery module.

Preferably, the groove extends in a groove depth direction of the connecting groove.

Preferably, the protrusion extends in a groove depth direction of the coupling groove.

Preferably, the width of the nut in the width direction of the connecting groove matches the width of the connecting groove.

Preferably, the nut is made of metal, and the nut base is made of plastic.

A battery module, includes any one of the above-mentioned battery module coupling assembling, still includes:

the nut base is fixedly arranged on the shell;

the battery cell is arranged in the shell and comprises a plurality of battery cell single sheets which are sequentially arranged along the first direction;

the two output copper bars are arranged on the shell at intervals along the first direction, the battery module connecting assemblies are arranged in one-to-one correspondence with the output copper bars, one end of each output copper bar extends into the shell and is fixedly connected with a lug of the battery cell, the other end of each output copper bar extends to the position above the corresponding nut, and a second connecting hole is formed in one end, located above the corresponding nut, of each output copper bar;

the connecting copper bars are arranged in one-to-one correspondence with the output copper bars, and third connecting holes are formed in the connecting copper bars;

the fasteners are arranged in one-to-one correspondence with the output copper bars, the fasteners sequentially penetrate through the third connecting holes, the second connecting holes and the first connecting holes to fasten the connection copper bars and the output copper bars on the nuts, and the two gaps in the two battery module connecting components are respectively arranged at one ends, far away from each other, of the two connecting grooves.

Preferably, the output copper bar is welded and fixed with the lug.

Preferably, the first connecting hole is a threaded hole, and the fastener is a bolt.

Preferably, the case includes an end plate on which the battery module connecting assembly is disposed.

Preferably, the end plate is provided with an installation groove, and the nut base is fixedly arranged in the installation groove.

The utility model has the advantages that:

the utility model provides a battery module coupling assembling and battery module, protruding on the nut base stretch into in the recess of nut with the nut butt, play the fixed action to the nut, avoid the nut to tremble for the nut base in the battery module use, and the spread groove is located and is provided with the clearance between the terminal surface that lateral wall and the nut of first direction one end are located this end, when using the battery module coupling assembling that this embodiment provided to connect the battery module, be the arrangement direction parallel arrangement of electric core monolithic also with the extending direction of spread groove and the main direction of expansion of electric core, when making electric core take place the inflation, the nut of being connected with electric core drives the protruding emergence elastic deformation or plastic deformation in the spread groove, set up gapped one end to the spread groove and remove. Thereby both realize the fixed of certain degree to the nut, make the nut remove relative to the nut base when electric core inflation again.

Drawings

Fig. 1 is a schematic view of a partial structure of a battery module according to an embodiment of the present invention;

fig. 2 is an exploded view of a part of the structure of a battery module according to an embodiment of the present invention;

fig. 3 is an exploded view of a part of the structure of a battery module according to an embodiment of the present invention;

FIG. 4 is an enlarged view at A in FIG. 3;

FIG. 5 is a schematic view of the nut of FIG. 4 after removal of the attachment slot;

fig. 6 is a partially enlarged view of a battery module according to an embodiment of the present invention;

fig. 7 is an exploded view of a part of the structure of a battery module according to an embodiment of the present invention.

In the figure:

1. a nut base; 11. connecting grooves; 12. a protrusion;

2. a nut; 21. a groove; 22. a first connection hole;

10. a housing; 101. an end plate;

20. an electric core; 201. a tab;

30. outputting copper bars; 301. a second connection hole;

40. connecting the copper bars; 401. a third connection hole;

50. a fastener.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

As shown in fig. 1 to 7, the present embodiment provides a battery module connecting assembly, which includes a nut base 1 and a nut 2. Nut base 1 is last to be provided with the spread groove 11 that extends along the first direction, and spread groove 11 all is provided with a plurality of archs 12 that set up along the first direction interval on the inside wall of the both sides of first direction, and elastic deformation or plastic deformation can take place for arch 12, and nut base 1 is configured as and links firmly with battery module's casing 10. Nut 2 sets up in spread groove 11, nut 2 all is provided with a plurality of recesses 21 that set up along the first direction interval on the lateral wall of the both sides of first direction of edge, recess 21 sets up with protruding 12 one-to-one, protruding 12 stretch into in the recess 21 with 2 butts of nut, spread groove 11 is located the inside wall and the first direction of the one end of first direction perpendicular, and be provided with the clearance with nut 2 between the terminal surface that is located this end, be provided with the first connecting hole 22 that extends along the groove depth direction of spread groove 11 on the nut 2, first connecting hole 22 is used for coupling nut 2 and battery module's electric core 20.

Battery module coupling assembling in this embodiment, arch 12 on the nut base 1 stretches into in the recess 21 of nut 2 with 2 butts of nut, play the fixed action to nut 2, avoid nut 2 to shake for nut base 1 in the battery module use, and coupling groove 11 is located and is provided with the clearance between the terminal surface of first direction one end with nut 2 being located this end, when using the battery module coupling assembling that this embodiment provided to connect the battery module, the extending direction with coupling groove 11 and electric core 20's main inflation direction also be the arrangement direction parallel arrangement of electric core monolithic, when making electric core 20 take place the inflation, arch 12 that nut 2 be connected with electric core 20 drove in the coupling groove 11 takes place elastic deformation or plastic deformation, set up gapped one end to coupling groove 11 and remove. Thereby, not only the nut 2 is fixed to a certain extent, but also the nut 2 can move relative to the nut base 1 when the battery cell 20 expands.

Optionally, the nut 2 is made of a metal material, specifically, the kind of the metal material may be selected as required, and the nut base 1 is made of a plastic material, such as nylon, PC + ABS or PBT, as long as the rigidity of the plastic material can meet the requirement and can be elastically or plastically deformed.

Alternatively, as shown in fig. 5, the groove 21 extends along the groove depth direction of the coupling groove 11, and the protrusion 12 extends along the groove depth direction of the coupling groove 11, so that the coupling groove 11 and the protrusion 12 have a larger contact area, and the protrusion 12 can more firmly clamp the nut 2.

Optionally, as shown in fig. 6, the width of the nut 2 along the width direction of the connecting groove 11 matches the width of the connecting groove 11, so that the nut 2 abuts against the inner side wall of the connecting groove 11 parallel to the first direction, and the stability of the nut 2 is further improved.

The embodiment further provides a battery module, as shown in fig. 1 to 7, which includes the above-mentioned battery module connecting assembly, and further includes a housing 10, a battery cell 20, two output copper bars 30, a connecting copper bar 40, and a fastener 50. The nut base 1 is fixedly arranged on the shell 10. The battery cell 20 is disposed in the casing 10, and the battery cell 20 includes a plurality of battery cell single sheets sequentially arranged along a first direction. Two output copper bars 30 set up on casing 10 along first direction interval, and battery module coupling assembling sets up with output copper bar 30 one-to-one, and output copper bar 30's one end stretches into in casing 10 and links firmly with utmost point ear 201 of electric core 20, and the other end extends to 2 tops of nut that correspond, and output copper bar 30 is located the one end of 2 tops of nut and is provided with second connecting hole 301. The connecting copper bars 40 and the output copper bars 30 are arranged in a one-to-one correspondence manner, and third connecting holes 401 are formed in the connecting copper bars 40. Fastener 50 and output copper bar 30 one-to-one set up, fastener 50 passes third connecting hole 401, second connecting hole 301 and first connecting hole 22 in proper order and will connect copper bar 40 and output copper bar 30 and fasten on nut 2, and two clearances on two battery module coupling assembling set up respectively in two connecting grooves 11 and keep away from each other's one end. Nut base 1 can enough realize fixing of certain degree to nut 2, makes nut 2 remove relative to nut base 1 when electric core 20 inflation again.

Specifically, in the present embodiment, the first connecting hole 22 is a threaded hole, the fastener 50 is a bolt, and the fastener 50 is screwed with the nut 2 after passing through the third connecting hole 401 and the second connecting hole 301, so as to fasten the output copper bar 30 and the connecting copper bar 40 on the nut 2.

Optionally, the output copper bars 30 are welded and fixed with the tabs 201, and the output copper bars 30 are common structures in the battery module, and the working principle of the output copper bars is not specifically described in this embodiment.

Alternatively, as shown in fig. 1 to 3, the housing 10 includes an end plate 101, the battery module connecting assembly is disposed on the end plate 101, specifically, a mounting groove is disposed on the end plate 101, and the nut base 1 is fixedly disposed in the mounting groove.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements, and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A battery module connecting assembly, comprising:

the nut base is provided with a connecting groove extending along a first direction, a plurality of bulges arranged at intervals along the first direction are arranged on the inner side walls of the two sides of the connecting groove along the first direction, the bulges can generate elastic deformation or plastic deformation, and the nut base is configured to be fixedly connected with a shell of a battery module;

the nut, it set up in the spread groove, the nut is followed all be provided with a plurality of edges on the lateral wall of the both sides of first direction the recess that first direction interval set up, the recess with protruding one-to-one sets up, the arch stretch into in the recess with the nut butt, the spread groove is located the inside wall of the one end of first direction with first direction is perpendicular, and with be provided with the clearance between the terminal surface that the nut is located this end, be provided with on the nut along the first connecting hole that the groove depth direction of spread groove extends, first connecting hole be used for connecting the nut with the electric core of battery module.

2. The battery module connecting assembly according to claim 1, wherein the groove extends in a groove depth direction of the connecting groove.

3. The battery module connecting assembly according to claim 2, wherein the protrusion extends in a groove depth direction of the connecting groove.

4. The battery module connecting assembly according to claim 3, wherein the width of the nut in the width direction of the connecting groove matches the width of the connecting groove.

5. The battery module connecting assembly according to claim 1, wherein the nut is made of metal and the nut base is made of plastic.

6. A battery module connecting assembly according to any one of claims 1 to 5, further comprising:

the nut base is fixedly arranged on the shell;

7. The battery module as set forth in claim 6, wherein the output copper bars are welded and fixed with the tabs.

8. The battery module according to claim 6, wherein the first coupling holes are threaded holes, and the fasteners are bolts.

9. The battery module according to claim 6, wherein the housing includes an end plate, the battery module connection assembly being disposed on the end plate.

10. The battery module as recited in claim 9, wherein the end plate is provided with a mounting groove, and the nut base is fixedly disposed in the mounting groove.